Electrical Machines In a transformer, hysteresis and eddy current losses depend upon supply frequency load current maximum flux density both 2 and 3 supply frequency load current maximum flux density both 2 and 3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Maximum allowable tan - delta (tanδ) of dielectric dispassion factor of power transformer insulating oil is generally taken as 0.5 at 90°C. 1 at 90°C. 2 at 90°C. 3 at 90°C. 0.5 at 90°C. 1 at 90°C. 2 at 90°C. 3 at 90°C. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Magnetic field of a DC generator is produced by what? Permanent magnets. Electromagnets. None of the options. Both B and C. Permanent magnets. Electromagnets. None of the options. Both B and C. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The rotor electromotive force of the IM is observed to make 100 complete alterations per minute, calculated slip 3 %. 0 .001 %. None of these 3.33 %. 3 %. 0 .001 %. None of these 3.33 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the phase difference between two windings of A.C servomotor ? 90°. 60°. 30°. 120°. 90°. 60°. 30°. 120°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What are the starters used for starting of cage motors? DOL starter. Auto transformer starter. Star-delta starter. All of these. DOL starter. Auto transformer starter. Star-delta starter. All of these. ANSWER DOWNLOAD EXAMIANS APP
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